Seeing how it's not in the yaoi genre and how the author normally writes shoujo; I don't expect it to go anywhere. If I'm wrong and by some miracle they do get together I don't expect to see much of the relationship. I expect it to be very tame maybe a hug or kiss, but I wouldn't count on it.
Does anyone think Shiro and Officer will fall in love? Or will we be forever cursed with bromance and teasing -////-